Spring drive mechanism



A. C. ZWARICH.

SPRING DRIVE MECHANISM.

APPLICATION HLED Da c-l zo, 1919.

1,355,585. 'Patented on.12,192o.

UNITED STAMENT OFFICE. Y

ANDREW-C. ZWARICH, OF HOMESTEAD, PENNSYLVANIA.

SPRING DRIVE MECHANISM.

and the invention has for its objects to pro vide a driving mechanism ofthe type set forth, 1n a manner as hereinafter referred to, which iscomparatively simple in its construction and arrangement, strong,durable and efficlent 1n its use, and inexpensive to y manufacture.

- To the accomplishmentl of these and such other objects as mayhereinafter appear, the invention consists of the novel construction,combination and arrangement of parts herein specifically described andillustrated in the accompanying drawing wherein is shown an embodimentof the invention, but it is to be understood that the device shown ismerely illustrative and that various changes in the form, proportion andminor details of construction may be resorted to, without departing fromthe principle or sacrificing any of the advantages of the invention,which come within the scope of the claim hereunto appended. v

In the drawing forming a portion of this specification and wherein likenumerals designate corresponding parts throughout the several views:

Figure 1 is a top plan view of a spring drive mechanism in accordancewith this invention.

Fig. 2 is a sectional view of the device on line II-IL Fig. Y1. Y

Fig. 3 is a sectional view on line III-III,

Y Fig. 2.

Referring in detail to the drawing, the

- spring drive mechanism, in accordance with Specification of LettersPatent.y Patented Oct.' 12, 1920 Application medrnsembef 2e, 1919.seriarNo. 346,353. Y

y A pair of integrally formed gears 6 vand 7 'are mounted forrotation onthe bearing 4 within the gear casing 1. VThe top gear-6 is of lessdiameter than the bottom gear 7.

Rotatably mounted on the shaft`5 and seated on top of the bearing 4 isthe spring casing 8, in 'which a coil spring 9 is carried.

One end Vof the spring 9 is connected,vas at 10, to the shaft'5,'whilethe other endth'ereof 1s connected, as at 11, to the spring casing 8.The spring casing 8 is further provided with a suitable cover plate 12.

A gear ring 13, having teeth formed on its inner periphery, is mountedon top. of the flange 3, of the gear casing 1, and mounted on the gearring 13 is a casing ring 14, which latter surrounds the spring casing 8,and is provided with the top plate 15.

The gear casing 1, gear ring 13, casing rlng 14, and the top plate 15are securely connected together by means of the bolts 16, as clearlyshown in Fig. 2,v of the drawing.

The upper end of the shaft 5 is suitably journaled, as at 17, in the topplate 15, and carries the operating gear 18 iXedly mounted thereon. bymeans of the screw 19. A winding gear 20, provided with a hand-holdturning bar 21, is Vsuitably journaled in the .top plate 15 and mesheswith the operating gear 18.

To prevent the return movement of the shaft 5 when the spring 9 thereofis wound,

is rotatably mounted on the i shaft 28, which latter is fXed to thebottom Y of the spring casing 8 adjacent the outer edge thereof. Thepinion 27 is positioned intermediate of the top gear 6 and the gear.

ring 13 and is in mesh with both.

A vertical shaft 29, suitably journaled in the casing of the mechanismin any desired manner, carries the pinion' 30 at its lower end and thetransmission gear 31 at its upper end, both of which are fixed to theshaft 29 to turn therewith. The pinion 30 meshes with the bottom gear 7to drive the transmission gear 31 which connects to any appl'b ance ,itmay be desired to operate. A

` tensioned around the shaft 5 and attachedl catch22willho1d thespring 9in the ten.

sioned position. The spring 9 now being to the latter and to the springcasing 8, will cause" the s ring casing 8 to rotate on theV shaft 5. ponsuch rotationl the pinion 27 will be rotated by itswengagement with'thestationarygear ring 13 and rotate the gear v6 with which the pinion 27also meshes. The gear 7 being'integral with gear 6 will alsoy be rotatedand causethe'rotation ofthe pinion 30, shaft 2491and thetransmissiongear 31.

`What I claim is: .Y i A dr1v1ng mechamsm compr1s1ng Ya powertransmitting spring, .a casing connected 20' therewith and revolvedthereby, a gear casing having a stationary gear rackxed thereto, apinioncarried by the spring cas ing and operated by said gear rack during therevolution of said spring casing, a gear 25 gear mechanism,'said shaftfurther consti; 30

tuting a winding element'forsaidspring. Intestimony whereof I aix mysignature.

ANDREW G. ZWARICH.

